Extractor.



II. PRICE & A. N. HOOD.

EXTRAGTOR.

APPLICATION IIJED JAN. 25, 1907. Y 932,900. Patented Aug. 31, 1909.l

wy@ JM? sans tlNllTE EXTRACTOR.

Specicationof Letters Patent.

lPatentedAug. 31, 1909n application mea January 25, 19er. serial No. sarna?.

To all whom it may concern:

Be it known that We, HUBERT PRICE, a subject of the King of Great Britain, and An'rmn N. Hoon, a citizen of the United States. residing at 99 Bedford-street, Bos

ton, Massachusetts, have invented certain new and useful Improvement-s in Extractors, of which the following is a specification.

Our present invention relates to improvements in apparatus for removing materials such as sand bark, albumens, acids, alkalies, resins and the like, from crude rubber, gums and similar substances.

Among the objects of this invention are to provide a simple, economical and durable form of extractor by which these materials may be easily removed in a much shorter time than has been possible by the apparatus heretofore in use, and a much superior prod uct secured.

The invention includes the novel features of construction hereinafter described and particularly pointed out in theappended claims.

An extractor constructed in accordance with this invention is illustrated in the accompanying drawings in which:

Figure 1 is a side elevation partly broken away. Fig. 2 is an end elevation and Fig. 3 is a plan view.

Referring by reference characters to the drawing, the numeral 4 designates an extractor chamber which is hermetieally closed and which may be of any suitable size and shape. lt is provided with a door 5 through which the material to be treated may be inserted, and another door 6 through which the material is to be taken out, and these doors, or any other part of the extractor, may conveniently be provided with glass covered openings through which the extraction process may be watched. A convenient manner of forming the chamber is to provide both doors 5 and 6 with glass covered openings so that opportunit is afforded for light and observation bot at the side and top. Within the chamber are located two coacting rollers 7, which have their ends or shafts suitably journaled in the side Walls of the chamber. rlhe shafts extend through suitable stuing boxes 8 in the walls and carry intermeshing gears 9 whereby the rollers are caused to rotate in unison and oneofthe rollers is provided with means for operating it, a crank 10 being shown in the drawing as representative of any suitable means for transmitting manual or mechanical power to tbe rollers.

An endless conveyer of suitable form is provided within the chamber which may conveniently be formed by endless -chains or belts 11 passing over drive wheels l2 carried by a shaft 13 at the upper part of the receptacle, and over suitable guides such as rollers 14 at the sides and bottom; such chains or belts carrying blades or buckets 15.

-The shaft 13 is extended through suitable stung boxes in the walls of the chamber and provided with means for 'imparting power' thereto, a hand crank being shown as representative of any suitable means.

, |The Ifunction of the conveyer is to lift the'materia-l under treatment from the bottom of thechamber and deliver it in position to be drawn through between the'rolls during their rotation and in order to insure of its being delivered in proper position, a guard or detlector 16 is provided between the rolls and the eonveyer. A supply pipe 17 connects with the chamber for supplying solvent theret, and an outlet pipe 18 at the bottom enables the liquid. with the extracted materials to be drawn od, the bottom being sloped toward the outlet and arranged `to permit the draining of the chamber.` rllhis bottom is provided with a steam 'acket 19 to which steam may be supplied from any suitable source for heating the contents of the extractor chamber. An air vent pipe as shown at 20 is also provided.

ln using the extractor above described the gum or other material which. has been run into comparatively thin sheets, is put `nto the extractor chamber whichyis then led with liquidto about the height of the bottom of the rolls. Steam is then turned on gently sof as to bring the liquid' slowly up nearly to the boiling point where it is kept Afor a suitable length of time. During this period the eonveyer is given a slight recip-` rocating movement to ag'itate the contents of the chamber. rlhe liquid with the ex- 'heated and the substance. subjected to the action thereof, the conveyer being operated to agitate the contents of the chamber Vmore 'tracted materials is then drawn od and may violently. After a suitable interval the liquid is again drained od for evaporation and condensation, and a'. fresh supply of liquid added to the chamber. This fresh liquid is likewise heated for the desired length of time during which at desired intervals the conveyer is operated to raise the gum and deliver it upon the rolls, which are rotated to compress or knead the gum whereby the materials remaining in the gum are more readily subjected to the liquid and its complete solution or separation more readily eiected. lf desired or found necessary this operation may be repeated with fresh liquid; or if the nature of the grim is such as to make it desirable, the rolls may be brought into action earlier in the process. Having thus described our invention, what We claim 1s:

l. In an apparatus for extracting resinsl and the like from rubber gums, a closed chamber havin means for feeding solvent thereto and withdrawing it therefrom, a pair o rolls located Within the chamber above the bottom thereof, and an endless chain conveyer passing along the bottom of the tank and to a `point above the rolls, and blades carried by said conveyer for agitatessere@ ing the material and carrying it up to the rolls, substantially as described.

2. An extractor chamber having a plu rality of rollsfor Working rubber gum and the like located near the center 0f the chamber, and an endless conveyer traveling in proximity to the sides of said chamber and serving to convey the gum from the bottom and deliver it to the rolls substantially `as described.

An extractor chamber having a plurality of rolls for Working rubber gum and the like, located near the center of the chamber, and an. endless conveyer traveling in proximity to the sides of said chamber and serving to convey the gum from the bottom and deliver it to the rolls, and e deflector between the rolls and conveyer at the delivery side substantially as described.

HUBERT PRICE. ARTHUR N. HOOD.

Witnesses to Hubert Price:

GEO. E. CHAMBERLIN, JAS. P. SIssoN.

lVitnesses to Arthur N, Hood:

C. A. ROCHE, W. G. PAGE.v 

